1 | #include "globals.h"
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2 |
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3 | #define REQ_SIZE 328 // 256 + 20 + 0x34
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4 | static uchar upwd[64]={0};
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5 | static uchar *req;
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6 | static int is_udp=1;
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7 |
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8 | static int camd35_send(uchar *buf)
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9 | {
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10 | int l;
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11 | unsigned char rbuf[REQ_SIZE+15+4], *sbuf=rbuf+4;
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12 |
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13 | if (!client[cs_idx].udp_fd) return(-1);
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14 | l=20+buf[1]+(((buf[0]==3) || (buf[0]==4)) ? 0x34 : 0);
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15 | memcpy(rbuf, client[cs_idx].ucrc, 4);
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16 | memcpy(sbuf, buf, l);
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17 | memset(sbuf+l, 0xff, 15); // set unused space to 0xff for newer camd3's
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18 | memcpy(sbuf+4, i2b(4, crc32(0L, sbuf+20, sbuf[1])), 4);
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19 | l=boundary(4, l);
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20 | cs_ddump(sbuf, l, "send %d bytes to %s", l, remote_txt());
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21 | aes_encrypt(sbuf, l);
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22 |
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23 | if (is_udp)
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24 | return(sendto(client[cs_idx].udp_fd, rbuf, l+4, 0,
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25 | (struct sockaddr *)&client[cs_idx].udp_sa,
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26 | sizeof(client[cs_idx].udp_sa)));
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27 | else
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28 | return(send(client[cs_idx].udp_fd, rbuf, l+4, 0));
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29 | }
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30 |
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31 | static int camd35_auth_client(uchar *ucrc)
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32 | {
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33 | int rc=1;
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34 | ulong crc;
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35 | struct s_auth *account;
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36 |
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37 | if (upwd[0])
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38 | return(memcmp(client[cs_idx].ucrc, ucrc, 4) ? 1 : 0);
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39 | client[cs_idx].crypted=1;
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40 | crc=(ucrc[0]<<24) | (ucrc[1]<<16) | (ucrc[2]<<8) | ucrc[3];
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41 | for (account=cfg->account; (account) && (!upwd[0]); account=account->next)
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42 | if (crc==crc32(0L, MD5((unsigned char *)account->usr, strlen(account->usr), NULL), 16))
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43 | {
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44 | memcpy(client[cs_idx].ucrc, ucrc, 4);
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45 | strcpy((char *)upwd, account->pwd);
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46 | aes_set_key((char *) MD5(upwd, strlen((char *)upwd), NULL));
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47 | rc=cs_auth_client(account, NULL);
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48 | }
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49 | return(rc);
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50 | }
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51 |
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52 | static int camd35_recv(uchar *buf, int l)
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53 | {
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54 | int rc, n, s, rs;
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55 | unsigned char recrc[4];
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56 | for (rc=rs=s=0; !rc; s++) switch(s)
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57 | {
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58 | case 0:
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59 | if (is_server)
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60 | {
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61 | if (!client[cs_idx].udp_fd) return(-9);
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62 | if (is_udp)
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63 | rs=recv_from_udpipe(buf, l);
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64 | else
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65 | rs=recv(client[cs_idx].udp_fd, buf, l, 0);
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66 | }
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67 | else
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68 | {
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69 | if (!client[cs_idx].udp_fd) return(-9);
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70 | rs=recv(client[cs_idx].udp_fd, buf, l, 0);
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71 | }
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72 | if (rs<24) rc=-1;
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73 | break;
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74 | case 1:
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75 | memcpy(recrc, buf, 4);
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76 | memmove(buf, buf+4, rs-=4);
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77 | switch (camd35_auth_client(recrc))
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78 | {
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79 | case 0: break; // ok
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80 | case 1: rc=-2; break; // unknown user
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81 | default: rc=-9; break; // error's from cs_auth()
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82 | }
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83 | break;
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84 | case 2:
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85 | aes_decrypt(buf, rs);
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86 | cs_ddump(buf, rs, "received %d bytes from %s", rs, remote_txt());
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87 | if (rs!=boundary(4, rs))
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88 | cs_debug("WARNING: packet size has wrong decryption boundary");
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89 | n=(buf[0]==3) ? n=0x34 : 0;
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90 | n=boundary(4, n+20+buf[1]);
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91 | if (n<rs)
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92 | cs_debug("ignoring %d bytes of garbage", rs-n);
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93 | else
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94 | if (n>rs) rc=-3;
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95 | break;
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96 | case 3:
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97 | if (crc32(0L, buf+20, buf[1])!=b2i(4, buf+4)) rc=-4;
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98 | if (!rc) rc=n;
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99 | break;
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100 | }
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101 | if ((rs>0) && ((rc==-1)||(rc==-2)))
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102 | cs_ddump(buf, rs, "received %d bytes from %s (native)", rs, remote_txt);
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103 | client[cs_idx].last=time((time_t *) 0);
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104 | switch(rc)
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105 | {
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106 | case -1: cs_log("packet to small (%d bytes)", rs);
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107 | break;
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108 | case -2: cs_auth_client(0, "unknown user");
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109 | break;
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110 | case -3: cs_log("incomplete request !");
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111 | break;
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112 | case -4: cs_log("checksum error (wrong password ?)");
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113 | break;
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114 | }
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115 | return(rc);
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116 | }
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117 |
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118 | /*
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119 | * server functions
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120 | */
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121 |
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122 | static void camd35_request_emm(ECM_REQUEST *er)
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123 | {
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124 | int i, au;
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125 | time_t now;
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126 | static time_t last=0;
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127 | static int disable_counter=0;
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128 | static uchar lastserial[8]={0,0,0,0,0,0,0,0};
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129 |
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130 | au=client[cs_idx].au;
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131 | if ((au<0) || (au>CS_MAXREADER)) return; // TODO
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132 |
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133 | time(&now);
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134 | if (!memcmp(lastserial, reader[au].hexserial, 8))
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135 | if (abs(now-last)<180) return;
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136 | memcpy(lastserial, reader[au].hexserial, 8);
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137 | last=now;
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138 |
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139 | if (reader[au].caid[0])
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140 | {
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141 | disable_counter=0;
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142 | log_emm_request(au);
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143 | }
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144 | else
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145 | if (disable_counter>2)
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146 | return;
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147 | else
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148 | disable_counter++;
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149 |
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150 | // if (reader[au].hexserial[3])
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151 | // {
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152 | // if (!reader[au].online)
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153 | // {
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154 | // memset(lastserial, 0, sizeof(lastserial));
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155 | // return;
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156 | // }
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157 | memset(mbuf, 0, sizeof(mbuf));
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158 | mbuf[2]=mbuf[3]=0xff; // must not be zero
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159 | memcpy(mbuf+ 8, i2b(2, er->srvid), 2);
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160 | memcpy(mbuf+12, i2b(4, er->prid ), 4);
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161 | memcpy(mbuf+16, i2b(2, er->pid ), 2);
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162 | mbuf[0]=5;
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163 | mbuf[1]=111;
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164 | if (reader[au].caid[0])
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165 | {
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166 | mbuf[39]=1; // no. caids
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167 | mbuf[20]=reader[au].caid[0]>>8; // caid's (max 8)
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168 | mbuf[21]=reader[au].caid[0]&0xff;
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169 | memcpy(mbuf+40, reader[au].hexserial, 6); // serial now 6 bytes
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170 | mbuf[47]=reader[au].nprov;
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171 | for (i=0; i<reader[au].nprov; i++)
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172 | {
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173 | if (((reader[au].caid[0] >= 0x1700) && (reader[au].caid[0] <= 0x1799)) || // Betacrypt
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174 | ((reader[au].caid[0] >= 0x0600) && (reader[au].caid[0] <= 0x0699))) // Irdeto (don't know if this is correct, cause I don't own a IRDETO-Card)
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175 | {
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176 | mbuf[48+(i*5)]=reader[au].prid[i][0];
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177 | memcpy(&mbuf[50+(i*5)], &reader[au].prid[i][1], 3);
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178 | }
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179 | else
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180 | {
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181 | mbuf[48+(i*5)]=reader[au].prid[i][2];
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182 | mbuf[49+(i*5)]=reader[au].prid[i][3];
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183 | memcpy(&mbuf[50+(i*5)], &reader[au].sa[i][0],3);
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184 | }
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185 | }
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186 | mbuf[128]=(reader[au].b_nano[0xd0])?0:1;
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187 | mbuf[129]=(reader[au].b_nano[0xd2])?0:1;
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188 | mbuf[130]=(reader[au].b_nano[0xd3])?0:1;
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189 | }
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190 | else // disable emm
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191 | mbuf[20]=mbuf[39]=mbuf[40]=mbuf[47]=mbuf[49]=1;
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192 | memcpy(mbuf+10, mbuf+20, 2);
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193 | camd35_send(mbuf); // send with data-len 111 for camd3 > 3.890
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194 | mbuf[1]++;
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195 | camd35_send(mbuf); // send with data-len 112 for camd3 < 3.890
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196 | // }
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197 | }
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198 |
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199 | static void camd35_send_dcw(ECM_REQUEST *er)
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200 | {
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201 | uchar *buf;
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202 | buf=req+(er->cpti*REQ_SIZE); // get orig request
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203 | if (er->rc<4)
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204 | {
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205 | if (buf[0]==3)
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206 | memmove(buf+20+16, buf+20+buf[1], 0x34);
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207 | buf[0]++;
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208 | buf[1]=16;
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209 | memcpy(buf+20, er->cw, buf[1]);
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210 | }
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211 | else
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212 | {
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213 | buf[0]=0x44;
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214 | buf[1]=0;
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215 | }
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216 | camd35_send(buf);
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217 | camd35_request_emm(er);
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218 | }
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219 |
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220 | static void camd35_process_ecm(uchar *buf)
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221 | {
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222 | ECM_REQUEST *er;
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223 | if (!(er=get_ecmtask()))
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224 | return;
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225 | er->l=buf[1];
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226 | memcpy(req+(er->cpti*REQ_SIZE), buf, 0x34+20+er->l); // save request
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227 | er->srvid=b2i(2, buf+ 8);
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228 | er->caid =b2i(2, buf+10);
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229 | er->prid =b2i(4, buf+12);
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230 | er->pid =b2i(2, buf+16);
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231 | memcpy(er->ecm, buf+20, er->l);
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232 | get_cw(er);
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233 | }
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234 |
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235 | static void camd35_process_emm(uchar *buf)
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236 | {
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237 | int au;
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238 | memset(&epg, 0, sizeof(epg));
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239 | au=client[cs_idx].au;
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240 | if ((au<0) || (au>CS_MAXREADER)) return; // TODO
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241 | epg.l=buf[1];
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242 | memcpy(epg.caid , buf+10 , 2);
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243 | memcpy(epg.provid , buf+12 , 4);
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244 | memcpy(epg.hexserial, reader[au].hexserial, 8); // dummy
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245 | memcpy(epg.emm , buf+20 , epg.l);
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246 | do_emm(&epg);
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247 | }
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248 |
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249 | static void camd35_server()
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250 | {
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251 | int n;
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252 |
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253 | req=(uchar *)malloc(CS_MAXPENDING*REQ_SIZE);
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254 | if (!req)
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255 | {
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256 | cs_log("Cannot allocate memory (errno=%d)", errno);
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257 | cs_exit(1);
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258 | }
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259 | memset(req, 0, CS_MAXPENDING*REQ_SIZE);
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260 |
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261 | is_udp = (ph[client[cs_idx].ctyp].type == MOD_CONN_UDP);
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262 |
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263 | while ((n=process_input(mbuf, sizeof(mbuf), cfg->cmaxidle))>0)
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264 | {
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265 | switch(mbuf[0])
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266 | {
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267 | case 0: // ECM
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268 | case 3: // ECM (cascading)
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269 | camd35_process_ecm(mbuf);
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270 | break;
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271 | case 6: // EMM
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272 | camd35_process_emm(mbuf);
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273 | break;
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274 | default:
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275 | cs_log("unknown command !");
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276 | }
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277 | }
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278 |
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279 | if(req) { free(req); req=0;}
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280 |
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281 | cs_disconnect_client();
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282 | }
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283 |
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284 | /*
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285 | * client functions
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286 | */
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287 |
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288 | static void casc_set_account()
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289 | {
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290 | strcpy((char *)upwd, reader[ridx].r_pwd);
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291 | memcpy(client[cs_idx].ucrc, i2b(4, crc32(0L, MD5((unsigned char *)reader[ridx].r_usr, strlen(reader[ridx].r_usr), NULL), 16)), 4);
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292 | aes_set_key((char *)MD5(upwd, strlen((char *)upwd), NULL));
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293 | client[cs_idx].crypted=1;
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294 | }
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295 |
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296 | int camd35_client_init()
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297 | {
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298 | static struct sockaddr_in loc_sa;
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299 | struct protoent *ptrp;
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300 | int p_proto;//, sock_type;
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301 | char ptxt[16];
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302 |
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303 | pfd=0;
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304 | if (reader[ridx].r_port<=0)
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305 | {
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306 | cs_log("invalid port %d for server %s", reader[ridx].r_port, reader[ridx].device);
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307 | return(1);
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308 | }
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309 | is_udp=(reader[ridx].typ==R_CAMD35);
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310 | if( (ptrp=getprotobyname(is_udp ? "udp" : "tcp")) )
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311 | p_proto=ptrp->p_proto;
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312 | else
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313 | p_proto=(is_udp) ? 17 : 6; // use defaults on error
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314 |
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315 | client[cs_idx].ip=0;
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316 | memset((char *)&loc_sa,0,sizeof(loc_sa));
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317 | loc_sa.sin_family = AF_INET;
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318 | #ifdef LALL
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319 | if (cfg->serverip[0])
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320 | loc_sa.sin_addr.s_addr = inet_addr(cfg->serverip);
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321 | else
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322 | #endif
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323 | loc_sa.sin_addr.s_addr = INADDR_ANY;
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324 | loc_sa.sin_port = htons(reader[ridx].l_port);
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325 |
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326 | if ((client[cs_idx].udp_fd=socket(PF_INET, is_udp ? SOCK_DGRAM : SOCK_STREAM, p_proto))<0)
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327 | {
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328 | cs_log("Socket creation failed (errno=%d)", errno);
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329 | cs_exit(1);
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330 | }
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331 |
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332 | #ifdef SO_PRIORITY
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333 | if (cfg->netprio)
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334 | setsockopt(client[cs_idx].udp_fd, SOL_SOCKET, SO_PRIORITY, (void *)&cfg->netprio, sizeof(ulong));
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335 | #endif
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336 |
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337 | if (reader[ridx].l_port>0)
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338 | {
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339 | if (bind(client[cs_idx].udp_fd, (struct sockaddr *)&loc_sa, sizeof (loc_sa))<0)
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340 | {
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341 | cs_log("bind failed (errno=%d)", errno);
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342 | close(client[cs_idx].udp_fd);
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343 | return(1);
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344 | }
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345 | sprintf(ptxt, ", port=%d", reader[ridx].l_port);
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346 | }
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347 | else
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348 | ptxt[0]='\0';
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349 |
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350 | casc_set_account();
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351 | memset((char *)&client[cs_idx].udp_sa, 0, sizeof(client[cs_idx].udp_sa));
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352 | client[cs_idx].udp_sa.sin_family=AF_INET;
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353 | client[cs_idx].udp_sa.sin_port=htons((u_short)reader[ridx].r_port);
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354 |
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355 | cs_log("proxy %s:%d (fd=%d%s)",
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356 | reader[ridx].device, reader[ridx].r_port,
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357 | client[cs_idx].udp_fd, ptxt);
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358 |
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359 | if (is_udp) pfd=client[cs_idx].udp_fd;
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360 |
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361 | return(0);
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362 | }
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363 |
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364 | int camd35_client_init_log()
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365 | {
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366 | static struct sockaddr_in loc_sa;
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367 | struct protoent *ptrp;
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368 | int p_proto;
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369 |
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370 | if (reader[ridx].log_port<=0)
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371 | {
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372 | cs_log("invalid port %d for camd3-loghost", reader[ridx].log_port);
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373 | return(1);
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374 | }
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375 |
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376 | if (ptrp=getprotobyname("udp"))
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377 | p_proto=ptrp->p_proto;
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378 | else
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379 | p_proto=17; // use defaults on error
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380 |
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381 | memset((char *)&loc_sa,0,sizeof(loc_sa));
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382 | loc_sa.sin_family = AF_INET;
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383 | loc_sa.sin_addr.s_addr = INADDR_ANY;
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384 | loc_sa.sin_port = htons(reader[ridx].log_port);
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385 |
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386 | if ((logfd=socket(PF_INET, SOCK_DGRAM, p_proto))<0)
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387 | {
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388 | cs_log("Socket creation failed (errno=%d)", errno);
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389 | return(1);
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390 | }
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391 |
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392 | if (bind(logfd, (struct sockaddr *)&loc_sa, sizeof(loc_sa))<0)
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393 | {
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394 | cs_log("bind failed (errno=%d)", errno);
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395 | close(logfd);
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396 | return(1);
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397 | }
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398 |
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399 | cs_log("camd3 loghost initialized (fd=%d, port=%d)",
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400 | logfd, reader[ridx].log_port);
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401 |
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402 | return(0);
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403 | }
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404 |
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405 | static int tcp_connect()
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406 | {
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407 | if (!reader[ridx].tcp_connected)
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408 | {
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409 | int handle=0;
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410 | handle = network_tcp_connection_open(reader[ridx].device, reader[ridx].r_port);
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411 | if (handle<0) return(0);
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412 |
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413 | reader[ridx].tcp_connected = 1;
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414 | reader[ridx].last_s = reader[ridx].last_g = time((time_t *)0);
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415 | pfd = client[cs_idx].udp_fd = handle;
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416 | }
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417 | if (!client[cs_idx].udp_fd) return(0);
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418 | return(1);
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419 | }
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420 |
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421 | static int camd35_send_ecm(ECM_REQUEST *er, uchar *buf)
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422 | {
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423 | if (!client[cs_idx].udp_sa.sin_addr.s_addr) // once resolved at least
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424 | return(-1);
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425 |
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426 | if (!is_udp && !tcp_connect()) return(-1);
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427 |
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428 | memset(buf, 0, 20);
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429 | memset(buf+20, 0xff, er->l+15);
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430 | buf[1]=er->l;
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431 | memcpy(buf+ 8, i2b(2, er->srvid), 2);
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432 | memcpy(buf+10, i2b(2, er->caid ), 2);
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433 | memcpy(buf+12, i2b(4, er->prid ), 4);
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434 | // memcpy(buf+16, i2b(2, er->pid ), 2);
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435 | // memcpy(buf+16, &er->idx , 2);
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436 | memcpy(buf+16, i2b(2, er->idx ), 2);
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437 | buf[18]=0xff;
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438 | buf[19]=0xff;
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439 | memcpy(buf+20, er->ecm , er->l);
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440 | return((camd35_send(buf)<1) ? (-1) : 0);
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441 | }
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442 |
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443 | static int camd35_recv_chk(uchar *dcw, int *rc, uchar *buf, int n)
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444 | {
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445 | //int i;
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446 | ushort idx;
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447 |
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448 | if ((buf[0]!=1) && (buf[0]!=0x44)) // no cw, ignore others
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449 | return(-1);
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450 | // memcpy(&idx, buf+16, 2);
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451 | idx=b2i(2, buf+16);
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452 | *rc=(buf[0]!=0x44);
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453 | memcpy(dcw, buf+20, 16);
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454 | return(idx);
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455 | }
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456 |
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457 | static int camd35_recv_log(ushort *caid, ulong *provid, ushort *srvid)
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458 | {
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459 | int i;
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460 | uchar buf[512], *ptr, *ptr2;
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461 | ushort idx;
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462 | if (!logfd) return(-1);
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463 | if ((i=recv(logfd, buf, sizeof(buf), 0))<=0) return(-1);
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464 | buf[i]=0;
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465 |
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466 | if (!(ptr=(uchar *)strstr((char *)buf, " -> "))) return(-1);
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467 | ptr+=4;
|
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468 | if (strstr((char *)ptr, " decoded ")) return(-1); // skip "found"s
|
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469 | if (!(ptr2=(uchar *)strchr((char *)ptr, ' '))) return(-1); // corrupt
|
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470 | *ptr2=0;
|
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471 |
|
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472 | for (i=0, ptr2=(uchar *)strtok((char *)ptr, ":"); ptr2; i++, ptr2=(uchar *)strtok(NULL, ":"))
|
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473 | {
|
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474 | trim((char *)ptr2);
|
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475 | switch(i)
|
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476 | {
|
---|
477 | case 0: *caid =cs_atoi((char *)ptr2, strlen((char *)ptr2)>>1, 0); break;
|
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478 | case 1: *provid=cs_atoi((char *)ptr2, strlen((char *)ptr2)>>1, 0); break;
|
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479 | case 2: *srvid =cs_atoi((char *)ptr2, strlen((char *)ptr2)>>1, 0); break;
|
---|
480 | case 3: idx =cs_atoi((char *)ptr2, strlen((char *)ptr2)>>1, 0); break;
|
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481 | }
|
---|
482 | if (errno) return(-1);
|
---|
483 | }
|
---|
484 | return(idx&0x1FFF);
|
---|
485 | }
|
---|
486 |
|
---|
487 | /*
|
---|
488 | * module definitions
|
---|
489 | */
|
---|
490 |
|
---|
491 | void module_camd35(struct s_module *ph)
|
---|
492 | {
|
---|
493 | static PTAB ptab;
|
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494 | ptab.ports[0].s_port = cfg->c35_port;
|
---|
495 | ph->ptab = &ptab;
|
---|
496 | ph->ptab->nports = 1;
|
---|
497 |
|
---|
498 | strcpy(ph->desc, "camd 3.5x");
|
---|
499 | ph->type=MOD_CONN_UDP;
|
---|
500 | ph->multi=1;
|
---|
501 | ph->watchdog=1;
|
---|
502 | ph->s_ip=cfg->c35_srvip;
|
---|
503 | ph->s_handler=camd35_server;
|
---|
504 | ph->recv=camd35_recv;
|
---|
505 | ph->send_dcw=camd35_send_dcw;
|
---|
506 | ph->c_multi=1;
|
---|
507 | ph->c_init=camd35_client_init;
|
---|
508 | ph->c_recv_chk=camd35_recv_chk;
|
---|
509 | ph->c_send_ecm=camd35_send_ecm;
|
---|
510 | ph->c_init_log=camd35_client_init_log;
|
---|
511 | ph->c_recv_log=camd35_recv_log;
|
---|
512 | }
|
---|
513 |
|
---|
514 | void module_camd35_tcp(struct s_module *ph)
|
---|
515 | {
|
---|
516 | strcpy(ph->desc, "cs378x");
|
---|
517 | ph->type=MOD_CONN_TCP;
|
---|
518 | ph->multi=1;
|
---|
519 | ph->watchdog=1;
|
---|
520 | ph->ptab=&cfg->c35_tcp_ptab;
|
---|
521 | if (ph->ptab->nports==0)
|
---|
522 | ph->ptab->nports=1; // show disabled in log
|
---|
523 | ph->s_ip=cfg->c35_tcp_srvip;
|
---|
524 | ph->s_handler=camd35_server;
|
---|
525 | ph->recv=camd35_recv;
|
---|
526 | ph->send_dcw=camd35_send_dcw;
|
---|
527 | ph->c_multi=1;
|
---|
528 | ph->c_init=camd35_client_init;
|
---|
529 | ph->c_recv_chk=camd35_recv_chk;
|
---|
530 | ph->c_send_ecm=camd35_send_ecm;
|
---|
531 | ph->c_init_log=camd35_client_init_log;
|
---|
532 | ph->c_recv_log=camd35_recv_log;
|
---|
533 | }
|
---|